diff --git a/CHANGELOG.md b/CHANGELOG.md
index 031986e..fc3cf52 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,9 @@
  * Tweak lookup code to support translated messages as JSON rather than code.
  * Update data to CLDR 31.0.1
  * Adds locales en_MY, fr_CH, it_CH, and ps.
+ * Use locale digits for printing DateTime. This can also be disabled for a
+   particular locale use useNativeDigitsByDefaultFor or for a particular
+   DateFormat instance use useNativeDigits.
 
 ## 0.15.1
  * Use the platform.locale API to get the OS platform.
diff --git a/lib/date_symbol_data_local.dart b/lib/date_symbol_data_local.dart
index 5ccbbbd..15cd686 100644
--- a/lib/date_symbol_data_local.dart
+++ b/lib/date_symbol_data_local.dart
@@ -472,6 +472,7 @@
       // Date/time formatting symbols for locale ar.
       "ar": new DateSymbols(
           NAME: "ar",
+          ZERODIGIT: '\u0660',
           ERAS: const ['ق.م', 'م'],
           ERANAMES: const ['قبل الميلاد', 'ميلادي'],
           NARROWMONTHS: const [
@@ -1218,6 +1219,7 @@
       // Date/time formatting symbols for locale bn.
       "bn": new DateSymbols(
           NAME: "bn",
+          ZERODIGIT: '\u09E6',
           ERAS: const ['খ্রিস্টপূর্ব', 'খৃষ্টাব্দ'],
           ERANAMES: const ['খ্রিস্টপূর্ব', 'খৃষ্টাব্দ'],
           NARROWMONTHS: const [
@@ -5693,6 +5695,7 @@
       // Date/time formatting symbols for locale fa.
       "fa": new DateSymbols(
           NAME: "fa",
+          ZERODIGIT: '\u06F0',
           ERAS: const ['ق.م.', 'م.'],
           ERANAMES: const ['قبل از میلاد', 'میلادی'],
           NARROWMONTHS: const [
@@ -11129,6 +11132,7 @@
       // Date/time formatting symbols for locale mr.
       "mr": new DateSymbols(
           NAME: "mr",
+          ZERODIGIT: '\u0966',
           ERAS: const ['इ. स. पू.', 'इ. स.'],
           ERANAMES: const ['ईसवीसनपूर्व', 'ईसवीसन'],
           NARROWMONTHS: const [
@@ -11598,6 +11602,7 @@
       // Date/time formatting symbols for locale my.
       "my": new DateSymbols(
           NAME: "my",
+          ZERODIGIT: '\u1040',
           ERAS: const ['ဘီစီ', 'အေဒီ'],
           ERANAMES: const ['ခရစ်တော် မပေါ်မီနှစ်', 'ခရစ်နှစ်'],
           NARROWMONTHS: const [
@@ -11910,6 +11915,7 @@
       // Date/time formatting symbols for locale ne.
       "ne": new DateSymbols(
           NAME: "ne",
+          ZERODIGIT: '\u0966',
           ERAS: const ['ईसा पूर्व', 'सन्'],
           ERANAMES: const ['ईसा पूर्व', 'सन्'],
           NARROWMONTHS: const [
@@ -12999,6 +13005,7 @@
       // Date/time formatting symbols for locale ps.
       "ps": new DateSymbols(
           NAME: "ps",
+          ZERODIGIT: '\u06F0',
           ERAS: const ['له میلاد وړاندې', 'م.'],
           ERANAMES: const ['له میلاد څخه وړاندې', 'له میلاد څخه وروسته'],
           NARROWMONTHS: const [
diff --git a/lib/date_symbols.dart b/lib/date_symbols.dart
index 073e61f..dca4020 100644
--- a/lib/date_symbols.dart
+++ b/lib/date_symbols.dart
@@ -13,85 +13,128 @@
 class DateSymbols {
   String NAME;
   List<String>
+
       /// The short name of the era, e.g. 'BC' or 'AD'
       ERAS,
+
       /// The long name of the era, e.g. 'Before Christ' or 'Anno Domino'
       ERANAMES,
+
       /// Very short names of months, e.g. 'J'.
       NARROWMONTHS,
+
       /// Very short names of months as they would be written on their own,
       /// e.g. 'J'.
       STANDALONENARROWMONTHS,
+
       /// Full names of months, e.g. 'January'.
       MONTHS,
+
       /// Full names of months as they would be written on their own,
       /// e.g. 'January'.
       ///
       /// These are frequently the same as MONTHS, but for example might start
       /// with upper case where the names in MONTHS might not.
       STANDALONEMONTHS,
+
       /// Short names of months, e.g. 'Jan'.
       SHORTMONTHS,
+
       /// Short names of months as they would be written on their own,
       /// e.g. 'Jan'.
       STANDALONESHORTMONTHS,
+
       /// The days of the week, starting with Sunday.
       WEEKDAYS,
+
       /// The days of the week as they would be written on their own, starting
       /// with Sunday.
       /// Frequently the same as WEEKDAYS, but for example might
       /// start with upper case where the names in WEEKDAYS might not.
       STANDALONEWEEKDAYS,
+
       /// Short names for days of the week, starting with Sunday, e.g. 'Sun'.
       SHORTWEEKDAYS,
+
       /// Short names for days of the week as they would be written on their
       /// own, starting with Sunday, e.g. 'Sun'.
       STANDALONESHORTWEEKDAYS,
+
       /// Very short names for days of the week, starting with Sunday, e.g. 'S'.
       NARROWWEEKDAYS,
+
       /// Very short names for days of the week as they would be written on
       /// their own, starting with Sunday, e.g. 'S'.
       STANDALONENARROWWEEKDAYS,
+
       /// Names of the quarters of the year in a short form, e.g. 'Q1'.
       SHORTQUARTERS,
+
       /// Long names of the quartesr of the year, e.g. '1st Quarter'.
       QUARTERS,
+
       /// A list of length 2 with localized text for 'AM' and 'PM'.
       AMPMS,
+
       /// The supported date formats for this locale.
       DATEFORMATS,
+
       /// The supported time formats for this locale.
       TIMEFORMATS,
+
       /// The ways date and time formats can be combined for this locale.
       DATETIMEFORMATS;
   Map<String, String> AVAILABLEFORMATS;
+
   /// The first day of the week, in ISO 8601 style, where the first day of the
   /// week, i.e. index 0, is Monday.
   int FIRSTDAYOFWEEK;
+
   /// Which days are weekend days, integers where 0=Monday.
   ///
   /// For example, [5, 6] to mean Saturday and Sunday are weekend days.
   List<int> WEEKENDRANGE;
   int FIRSTWEEKCUTOFFDAY;
 
-  DateSymbols({this.NAME, this.ERAS, this.ERANAMES, this.NARROWMONTHS,
-      this.STANDALONENARROWMONTHS, this.MONTHS, this.STANDALONEMONTHS,
-      this.SHORTMONTHS, this.STANDALONESHORTMONTHS, this.WEEKDAYS,
-      this.STANDALONEWEEKDAYS, this.SHORTWEEKDAYS, this.STANDALONESHORTWEEKDAYS,
-      this.NARROWWEEKDAYS, this.STANDALONENARROWWEEKDAYS, this.SHORTQUARTERS,
-      this.QUARTERS, this.AMPMS,
+  String ZERODIGIT;
+
+  DateSymbols(
+      {this.NAME,
+      this.ERAS,
+      this.ERANAMES,
+      this.NARROWMONTHS,
+      this.STANDALONENARROWMONTHS,
+      this.MONTHS,
+      this.STANDALONEMONTHS,
+      this.SHORTMONTHS,
+      this.STANDALONESHORTMONTHS,
+      this.WEEKDAYS,
+      this.STANDALONEWEEKDAYS,
+      this.SHORTWEEKDAYS,
+      this.STANDALONESHORTWEEKDAYS,
+      this.NARROWWEEKDAYS,
+      this.STANDALONENARROWWEEKDAYS,
+      this.SHORTQUARTERS,
+      this.QUARTERS,
+      this.AMPMS,
+      this.ZERODIGIT,
       // TODO(alanknight): These formats are taken from Closure,
       // where there's only a fixed set of available formats.
       // Here we have the patterns separately. These should
       // either be used, or removed.
-      this.DATEFORMATS, this.TIMEFORMATS, this.AVAILABLEFORMATS,
-      this.FIRSTDAYOFWEEK, this.WEEKENDRANGE, this.FIRSTWEEKCUTOFFDAY,
+      this.DATEFORMATS,
+      this.TIMEFORMATS,
+      this.AVAILABLEFORMATS,
+      this.FIRSTDAYOFWEEK,
+      this.WEEKENDRANGE,
+      this.FIRSTWEEKCUTOFFDAY,
       this.DATETIMEFORMATS});
 
   // TODO(alanknight): Replace this with use of a more general serialization
   // facility once one is available. Issue 4926.
   DateSymbols.deserializeFromMap(Map map) {
-    List<String> _getStringList(String name) => new List<String>.from(map[name]);
+    List<String> _getStringList(String name) =>
+        new List<String>.from(map[name]);
     NAME = map["NAME"];
     ERAS = _getStringList("ERAS");
     ERANAMES = _getStringList("ERANAMES");
@@ -110,42 +153,54 @@
     SHORTQUARTERS = _getStringList("SHORTQUARTERS");
     QUARTERS = _getStringList("QUARTERS");
     AMPMS = _getStringList("AMPMS");
+    ZERODIGIT = map["ZERODIGIT"];
     DATEFORMATS = _getStringList("DATEFORMATS");
     TIMEFORMATS = _getStringList("TIMEFORMATS");
-    AVAILABLEFORMATS = new Map<String, String>.from(map["AVAILABLEFORMATS"] ?? {});
+    AVAILABLEFORMATS =
+        new Map<String, String>.from(map["AVAILABLEFORMATS"] ?? {});
     FIRSTDAYOFWEEK = map["FIRSTDAYOFWEEK"];
     WEEKENDRANGE = new List<int>.from(map["WEEKENDRANGE"]);
     FIRSTWEEKCUTOFFDAY = map["FIRSTWEEKCUTOFFDAY"];
     DATETIMEFORMATS = _getStringList("DATETIMEFORMATS");
   }
 
-  Map serializeToMap() => {
-    "NAME": NAME,
-    "ERAS": ERAS,
-    "ERANAMES": ERANAMES,
-    "NARROWMONTHS": NARROWMONTHS,
-    "STANDALONENARROWMONTHS": STANDALONENARROWMONTHS,
-    "MONTHS": MONTHS,
-    "STANDALONEMONTHS": STANDALONEMONTHS,
-    "SHORTMONTHS": SHORTMONTHS,
-    "STANDALONESHORTMONTHS": STANDALONESHORTMONTHS,
-    "WEEKDAYS": WEEKDAYS,
-    "STANDALONEWEEKDAYS": STANDALONEWEEKDAYS,
-    "SHORTWEEKDAYS": SHORTWEEKDAYS,
-    "STANDALONESHORTWEEKDAYS": STANDALONESHORTWEEKDAYS,
-    "NARROWWEEKDAYS": NARROWWEEKDAYS,
-    "STANDALONENARROWWEEKDAYS": STANDALONENARROWWEEKDAYS,
-    "SHORTQUARTERS": SHORTQUARTERS,
-    "QUARTERS": QUARTERS,
-    "AMPMS": AMPMS,
-    "DATEFORMATS": DATEFORMATS,
-    "TIMEFORMATS": TIMEFORMATS,
-    "AVAILABLEFORMATS": AVAILABLEFORMATS,
-    "FIRSTDAYOFWEEK": FIRSTDAYOFWEEK,
-    "WEEKENDRANGE": WEEKENDRANGE,
-    "FIRSTWEEKCUTOFFDAY": FIRSTWEEKCUTOFFDAY,
-    "DATETIMEFORMATS": DATETIMEFORMATS,
-  };
+  Map serializeToMap() {
+    // Don't write default ZERODIGIT, conserves space, but also minimize file
+    // churn.
+    var basicMap = _serializeToMap();
+    if (ZERODIGIT != null && ZERODIGIT != '') {
+      basicMap["ZERODIGIT"] = ZERODIGIT;
+    }
+    return basicMap;
+  }
+
+  Map _serializeToMap() => {
+        "NAME": NAME,
+        "ERAS": ERAS,
+        "ERANAMES": ERANAMES,
+        "NARROWMONTHS": NARROWMONTHS,
+        "STANDALONENARROWMONTHS": STANDALONENARROWMONTHS,
+        "MONTHS": MONTHS,
+        "STANDALONEMONTHS": STANDALONEMONTHS,
+        "SHORTMONTHS": SHORTMONTHS,
+        "STANDALONESHORTMONTHS": STANDALONESHORTMONTHS,
+        "WEEKDAYS": WEEKDAYS,
+        "STANDALONEWEEKDAYS": STANDALONEWEEKDAYS,
+        "SHORTWEEKDAYS": SHORTWEEKDAYS,
+        "STANDALONESHORTWEEKDAYS": STANDALONESHORTWEEKDAYS,
+        "NARROWWEEKDAYS": NARROWWEEKDAYS,
+        "STANDALONENARROWWEEKDAYS": STANDALONENARROWWEEKDAYS,
+        "SHORTQUARTERS": SHORTQUARTERS,
+        "QUARTERS": QUARTERS,
+        "AMPMS": AMPMS,
+        "DATEFORMATS": DATEFORMATS,
+        "TIMEFORMATS": TIMEFORMATS,
+        "AVAILABLEFORMATS": AVAILABLEFORMATS,
+        "FIRSTDAYOFWEEK": FIRSTDAYOFWEEK,
+        "WEEKENDRANGE": WEEKENDRANGE,
+        "FIRSTWEEKCUTOFFDAY": FIRSTWEEKCUTOFFDAY,
+        "DATETIMEFORMATS": DATETIMEFORMATS,
+      };
 
   toString() => NAME;
 }
@@ -157,126 +212,126 @@
     ERAS: const ['BC', 'AD'],
     ERANAMES: const ['Before Christ', 'Anno Domini'],
     NARROWMONTHS: const [
-  'J',
-  'F',
-  'M',
-  'A',
-  'M',
-  'J',
-  'J',
-  'A',
-  'S',
-  'O',
-  'N',
-  'D'
-],
+      'J',
+      'F',
+      'M',
+      'A',
+      'M',
+      'J',
+      'J',
+      'A',
+      'S',
+      'O',
+      'N',
+      'D'
+    ],
     STANDALONENARROWMONTHS: const [
-  'J',
-  'F',
-  'M',
-  'A',
-  'M',
-  'J',
-  'J',
-  'A',
-  'S',
-  'O',
-  'N',
-  'D'
-],
+      'J',
+      'F',
+      'M',
+      'A',
+      'M',
+      'J',
+      'J',
+      'A',
+      'S',
+      'O',
+      'N',
+      'D'
+    ],
     MONTHS: const [
-  'January',
-  'February',
-  'March',
-  'April',
-  'May',
-  'June',
-  'July',
-  'August',
-  'September',
-  'October',
-  'November',
-  'December'
-],
+      'January',
+      'February',
+      'March',
+      'April',
+      'May',
+      'June',
+      'July',
+      'August',
+      'September',
+      'October',
+      'November',
+      'December'
+    ],
     STANDALONEMONTHS: const [
-  'January',
-  'February',
-  'March',
-  'April',
-  'May',
-  'June',
-  'July',
-  'August',
-  'September',
-  'October',
-  'November',
-  'December'
-],
+      'January',
+      'February',
+      'March',
+      'April',
+      'May',
+      'June',
+      'July',
+      'August',
+      'September',
+      'October',
+      'November',
+      'December'
+    ],
     SHORTMONTHS: const [
-  'Jan',
-  'Feb',
-  'Mar',
-  'Apr',
-  'May',
-  'Jun',
-  'Jul',
-  'Aug',
-  'Sep',
-  'Oct',
-  'Nov',
-  'Dec'
-],
+      'Jan',
+      'Feb',
+      'Mar',
+      'Apr',
+      'May',
+      'Jun',
+      'Jul',
+      'Aug',
+      'Sep',
+      'Oct',
+      'Nov',
+      'Dec'
+    ],
     STANDALONESHORTMONTHS: const [
-  'Jan',
-  'Feb',
-  'Mar',
-  'Apr',
-  'May',
-  'Jun',
-  'Jul',
-  'Aug',
-  'Sep',
-  'Oct',
-  'Nov',
-  'Dec'
-],
+      'Jan',
+      'Feb',
+      'Mar',
+      'Apr',
+      'May',
+      'Jun',
+      'Jul',
+      'Aug',
+      'Sep',
+      'Oct',
+      'Nov',
+      'Dec'
+    ],
     WEEKDAYS: const [
-  'Sunday',
-  'Monday',
-  'Tuesday',
-  'Wednesday',
-  'Thursday',
-  'Friday',
-  'Saturday'
-],
+      'Sunday',
+      'Monday',
+      'Tuesday',
+      'Wednesday',
+      'Thursday',
+      'Friday',
+      'Saturday'
+    ],
     STANDALONEWEEKDAYS: const [
-  'Sunday',
-  'Monday',
-  'Tuesday',
-  'Wednesday',
-  'Thursday',
-  'Friday',
-  'Saturday'
-],
+      'Sunday',
+      'Monday',
+      'Tuesday',
+      'Wednesday',
+      'Thursday',
+      'Friday',
+      'Saturday'
+    ],
     SHORTWEEKDAYS: const ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'],
     STANDALONESHORTWEEKDAYS: const [
-  'Sun',
-  'Mon',
-  'Tue',
-  'Wed',
-  'Thu',
-  'Fri',
-  'Sat'
-],
+      'Sun',
+      'Mon',
+      'Tue',
+      'Wed',
+      'Thu',
+      'Fri',
+      'Sat'
+    ],
     NARROWWEEKDAYS: const ['S', 'M', 'T', 'W', 'T', 'F', 'S'],
     STANDALONENARROWWEEKDAYS: const ['S', 'M', 'T', 'W', 'T', 'F', 'S'],
     SHORTQUARTERS: const ['Q1', 'Q2', 'Q3', 'Q4'],
     QUARTERS: const [
-  '1st quarter',
-  '2nd quarter',
-  '3rd quarter',
-  '4th quarter'
-],
+      '1st quarter',
+      '2nd quarter',
+      '3rd quarter',
+      '4th quarter'
+    ],
     AMPMS: const ['AM', 'PM'],
     DATEFORMATS: const ['EEEE, MMMM d, y', 'MMMM d, y', 'MMM d, y', 'M/d/yy'],
     TIMEFORMATS: const ['h:mm:ss a zzzz', 'h:mm:ss a z', 'h:mm:ss a', 'h:mm a'],
@@ -284,11 +339,11 @@
     WEEKENDRANGE: const [5, 6],
     FIRSTWEEKCUTOFFDAY: 5,
     DATETIMEFORMATS: const [
-  '{1} \'at\' {0}',
-  '{1} \'at\' {0}',
-  '{1}, {0}',
-  '{1}, {0}'
-]);
+      '{1} \'at\' {0}',
+      '{1} \'at\' {0}',
+      '{1}, {0}',
+      '{1}, {0}'
+    ]);
 
 var en_USPatterns = const {
   'd': 'd', // DAY
diff --git a/lib/src/data/dates/symbols/ar.json b/lib/src/data/dates/symbols/ar.json
index 7fd827f..af0a599 100644
--- a/lib/src/data/dates/symbols/ar.json
+++ b/lib/src/data/dates/symbols/ar.json
@@ -1 +1 @@
-{"NAME":"ar","ERAS":["ق.م","م"],"ERANAMES":["قبل الميلاد","ميلادي"],"NARROWMONTHS":["ي","ف","م","أ","و","ن","ل","غ","س","ك","ب","د"],"STANDALONENARROWMONTHS":["ي","ف","م","أ","و","ن","ل","غ","س","ك","ب","د"],"MONTHS":["يناير","فبراير","مارس","أبريل","مايو","يونيو","يوليو","أغسطس","سبتمبر","أكتوبر","نوفمبر","ديسمبر"],"STANDALONEMONTHS":["يناير","فبراير","مارس","أبريل","مايو","يونيو","يوليو","أغسطس","سبتمبر","أكتوبر","نوفمبر","ديسمبر"],"SHORTMONTHS":["يناير","فبراير","مارس","أبريل","مايو","يونيو","يوليو","أغسطس","سبتمبر","أكتوبر","نوفمبر","ديسمبر"],"STANDALONESHORTMONTHS":["يناير","فبراير","مارس","أبريل","مايو","يونيو","يوليو","أغسطس","سبتمبر","أكتوبر","نوفمبر","ديسمبر"],"WEEKDAYS":["الأحد","الاثنين","الثلاثاء","الأربعاء","الخميس","الجمعة","السبت"],"STANDALONEWEEKDAYS":["الأحد","الاثنين","الثلاثاء","الأربعاء","الخميس","الجمعة","السبت"],"SHORTWEEKDAYS":["الأحد","الاثنين","الثلاثاء","الأربعاء","الخميس","الجمعة","السبت"],"STANDALONESHORTWEEKDAYS":["الأحد","الاثنين","الثلاثاء","الأربعاء","الخميس","الجمعة","السبت"],"NARROWWEEKDAYS":["ح","ن","ث","ر","خ","ج","س"],"STANDALONENARROWWEEKDAYS":["ح","ن","ث","ر","خ","ج","س"],"SHORTQUARTERS":["الربع الأول","الربع الثاني","الربع الثالث","الربع الرابع"],"QUARTERS":["الربع الأول","الربع الثاني","الربع الثالث","الربع الرابع"],"AMPMS":["ص","م"],"DATEFORMATS":["EEEE، d MMMM، y","d MMMM، y","dd‏/MM‏/y","d‏/M‏/y"],"TIMEFORMATS":["h:mm:ss a zzzz","h:mm:ss a z","h:mm:ss a","h:mm a"],"AVAILABLEFORMATS":null,"FIRSTDAYOFWEEK":5,"WEEKENDRANGE":[4,5],"FIRSTWEEKCUTOFFDAY":4,"DATETIMEFORMATS":["{1} {0}","{1} {0}","{1} {0}","{1} {0}"]}
\ No newline at end of file
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\ No newline at end of file
diff --git a/lib/src/data/dates/symbols/bn.json b/lib/src/data/dates/symbols/bn.json
index 23beb4d..95f90c2 100644
--- a/lib/src/data/dates/symbols/bn.json
+++ b/lib/src/data/dates/symbols/bn.json
@@ -1 +1 @@
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\ No newline at end of file
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\ No newline at end of file
diff --git a/lib/src/data/dates/symbols/fa.json b/lib/src/data/dates/symbols/fa.json
index fbf3b0e..b8a4a5d 100644
--- a/lib/src/data/dates/symbols/fa.json
+++ b/lib/src/data/dates/symbols/fa.json
@@ -1 +1 @@
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\ No newline at end of file
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\ No newline at end of file
diff --git a/lib/src/data/dates/symbols/mr.json b/lib/src/data/dates/symbols/mr.json
index 51dd9da..91ccfba 100644
--- a/lib/src/data/dates/symbols/mr.json
+++ b/lib/src/data/dates/symbols/mr.json
@@ -1 +1 @@
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\ No newline at end of file
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\ No newline at end of file
diff --git a/lib/src/data/dates/symbols/my.json b/lib/src/data/dates/symbols/my.json
index ba54355..6967b2b 100644
--- a/lib/src/data/dates/symbols/my.json
+++ b/lib/src/data/dates/symbols/my.json
@@ -1 +1 @@
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\ No newline at end of file
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\ No newline at end of file
diff --git a/lib/src/data/dates/symbols/ne.json b/lib/src/data/dates/symbols/ne.json
index 3d7a6f0..a2bd928 100644
--- a/lib/src/data/dates/symbols/ne.json
+++ b/lib/src/data/dates/symbols/ne.json
@@ -1 +1 @@
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\ No newline at end of file
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\ No newline at end of file
diff --git a/lib/src/data/dates/symbols/ps.json b/lib/src/data/dates/symbols/ps.json
index d6cfd84..40f250c 100644
--- a/lib/src/data/dates/symbols/ps.json
+++ b/lib/src/data/dates/symbols/ps.json
@@ -1 +1 @@
-{"NAME":"ps","ERAS":["له میلاد وړاندې","م."],"ERANAMES":["له میلاد څخه وړاندې","له میلاد څخه وروسته"],"NARROWMONTHS":["1","2","3","4","5","6","7","8","9","10","11","12"],"STANDALONENARROWMONTHS":["1","2","3","4","5","6","7","8","9","10","11","12"],"MONTHS":["جنوري","فبروري","مارچ","اپریل","مۍ","جون","جولای","اګست","سپتمبر","اکتوبر","نومبر","دسمبر"],"STANDALONEMONTHS":["جنوري","فبروري","مارچ","اپریل","مۍ","جون","جولای","اګست","سپتمبر","اکتوبر","نومبر","دسمبر"],"SHORTMONTHS":["جنوري","فبروري","مارچ","اپریل","مۍ","جون","جولای","اګست","سپتمبر","اکتوبر","نومبر","دسمبر"],"STANDALONESHORTMONTHS":["جنوري","فبروري","مارچ","اپریل","مۍ","جون","جولای","اګست","سپتمبر","اکتوبر","نومبر","دسمبر"],"WEEKDAYS":["یکشنبه","دوشنبه","سه‌شنبه","چهارشنبه","پنجشنبه","جمعه","شنبه"],"STANDALONEWEEKDAYS":["یکشنبه","دوشنبه","سه‌شنبه","چهارشنبه","پنجشنبه","جمعه","شنبه"],"SHORTWEEKDAYS":["یکشنبه","دوشنبه","سه‌شنبه","چهارشنبه","پنجشنبه","جمعه","شنبه"],"STANDALONESHORTWEEKDAYS":["یکشنبه","دوشنبه","سه‌شنبه","چهارشنبه","پنجشنبه","جمعه","شنبه"],"NARROWWEEKDAYS":["S","M","T","W","T","F","S"],"STANDALONENARROWWEEKDAYS":["S","M","T","W","T","F","S"],"SHORTQUARTERS":["لومړۍ ربعه","۲مه ربعه","۳مه ربعه","۴مه ربعه"],"QUARTERS":["لومړۍ ربعه","۲مه ربعه","۳مه ربعه","۴مه ربعه"],"AMPMS":["غ.م.","غ.و."],"DATEFORMATS":["EEEE د y د MMMM d","د y د MMMM d","y MMM d","y/M/d"],"TIMEFORMATS":["H:mm:ss (zzzz)","H:mm:ss (z)","H:mm:ss","H:mm"],"AVAILABLEFORMATS":null,"FIRSTDAYOFWEEK":5,"WEEKENDRANGE":[3,4],"FIRSTWEEKCUTOFFDAY":4,"DATETIMEFORMATS":["{1} {0}","{1} {0}","{1} {0}","{1} {0}"]}
\ No newline at end of file
+{"NAME":"ps","ERAS":["له میلاد وړاندې","م."],"ERANAMES":["له میلاد څخه وړاندې","له میلاد څخه وروسته"],"NARROWMONTHS":["1","2","3","4","5","6","7","8","9","10","11","12"],"STANDALONENARROWMONTHS":["1","2","3","4","5","6","7","8","9","10","11","12"],"MONTHS":["جنوري","فبروري","مارچ","اپریل","مۍ","جون","جولای","اګست","سپتمبر","اکتوبر","نومبر","دسمبر"],"STANDALONEMONTHS":["جنوري","فبروري","مارچ","اپریل","مۍ","جون","جولای","اګست","سپتمبر","اکتوبر","نومبر","دسمبر"],"SHORTMONTHS":["جنوري","فبروري","مارچ","اپریل","مۍ","جون","جولای","اګست","سپتمبر","اکتوبر","نومبر","دسمبر"],"STANDALONESHORTMONTHS":["جنوري","فبروري","مارچ","اپریل","مۍ","جون","جولای","اګست","سپتمبر","اکتوبر","نومبر","دسمبر"],"WEEKDAYS":["یکشنبه","دوشنبه","سه‌شنبه","چهارشنبه","پنجشنبه","جمعه","شنبه"],"STANDALONEWEEKDAYS":["یکشنبه","دوشنبه","سه‌شنبه","چهارشنبه","پنجشنبه","جمعه","شنبه"],"SHORTWEEKDAYS":["یکشنبه","دوشنبه","سه‌شنبه","چهارشنبه","پنجشنبه","جمعه","شنبه"],"STANDALONESHORTWEEKDAYS":["یکشنبه","دوشنبه","سه‌شنبه","چهارشنبه","پنجشنبه","جمعه","شنبه"],"NARROWWEEKDAYS":["S","M","T","W","T","F","S"],"STANDALONENARROWWEEKDAYS":["S","M","T","W","T","F","S"],"SHORTQUARTERS":["لومړۍ ربعه","۲مه ربعه","۳مه ربعه","۴مه ربعه"],"QUARTERS":["لومړۍ ربعه","۲مه ربعه","۳مه ربعه","۴مه ربعه"],"AMPMS":["غ.م.","غ.و."],"DATEFORMATS":["EEEE د y د MMMM d","د y د MMMM d","y MMM d","y/M/d"],"TIMEFORMATS":["H:mm:ss (zzzz)","H:mm:ss (z)","H:mm:ss","H:mm"],"AVAILABLEFORMATS":null,"FIRSTDAYOFWEEK":5,"WEEKENDRANGE":[3,4],"FIRSTWEEKCUTOFFDAY":4,"DATETIMEFORMATS":["{1} {0}","{1} {0}","{1} {0}","{1} {0}"],"ZERODIGIT":"۰"}
\ No newline at end of file
diff --git a/lib/src/intl/date_format.dart b/lib/src/intl/date_format.dart
index 0795b87..e9def84 100644
--- a/lib/src/intl/date_format.dart
+++ b/lib/src/intl/date_format.dart
@@ -595,6 +595,112 @@
     return cachedDateSymbols;
   }
 
+  static final Map<String, bool> _useNativeDigitsByDefault = {};
+
+  /// Should a new DateFormat for [locale] have useNativeDigits true.
+  ///
+  /// For example, for locale 'ar' when this setting is true, DateFormat will
+  /// format using Eastern Arabic digits, e.g. "\u0660, \u0661, \u0662". If it
+  /// is false, a new DateFormat will format using ASCII digits.
+  static shouldUseNativeDigitsByDefaultFor(String locale) {
+    return _useNativeDigitsByDefault[locale] ?? true;
+  }
+
+  /// Indicate if a new DateFormat for [locale] should have useNativeDigits
+  /// true.
+  ///
+  /// For example, for locale 'ar' when this setting is true, DateFormat will
+  /// format using Eastern Arabic digits, e.g. "\u0660, \u0661, \u0662". If it
+  /// is false, a new DateFormat will format using ASCII digits.
+  ///
+  /// If not indicated, the default value is true, so native digits will be
+  /// used.
+  static useNativeDigitsByDefaultFor(String locale, bool value) {
+    _useNativeDigitsByDefault[locale] = value;
+  }
+
+  bool _useNativeDigits;
+
+  /// Should we use native digits for printing DateTime, or ASCII.
+  ///
+  /// The default for this can be set using [useNativeDigitsByDefaultFor].
+  bool get useNativeDigits => _useNativeDigits == null
+      ? _useNativeDigits = shouldUseNativeDigitsByDefaultFor(locale)
+      : _useNativeDigits;
+
+  /// Should we use native digits for printing DateTime, or ASCII.
+  set useNativeDigits(bool native) {
+    _useNativeDigits = native;
+    // Invalidate any cached information that would depend on this setting.
+    _digitMatcher = null;
+    _localeZeroCodeUnit = null;
+    _localeZero = null;
+  }
+
+  /// Caches digit matchers that we have already calculated for particular
+  /// digits.
+  ///
+  /// Keys are the zero digits, and the values are matchers for digits in that
+  /// locale.
+  static Map<String, RegExp> _digitMatchers = {};
+
+  RegExp _digitMatcher;
+
+  /// A regular expression which matches against digits for this locale.
+  RegExp get digitMatcher {
+    if (_digitMatcher != null) return _digitMatcher;
+    _digitMatcher = _digitMatchers.putIfAbsent(localeZero, _initDigitMatcher);
+    return _digitMatcher;
+  }
+
+  /// Hard-code the most common matcher, which has special RegExp syntax.
+  static final RegExp _asciiDigitMatcher = new RegExp(r'^\d+');
+
+  int _localeZeroCodeUnit;
+
+  /// For performance, keep the code unit of the zero digit available.
+  int get localeZeroCodeUnit => _localeZeroCodeUnit == null
+      ? _localeZeroCodeUnit = localeZero.codeUnitAt(0)
+      : _localeZeroCodeUnit;
+  static final int _asciiZeroCodeUnit = '0'.codeUnitAt(0);
+
+  String _localeZero;
+
+  /// For performance, keep the zero digit available.
+  String get localeZero => _localeZero == null
+      ? _localeZero = (useNativeDigits ? dateSymbols.ZERODIGIT ?? '0' : '0')
+      : _localeZero;
+
+  // Does this use non-ASCII digits, e.g. Eastern Arabic.
+  bool get usesNativeDigits =>
+      useNativeDigits && _localeZeroCodeUnit != _asciiZeroCodeUnit;
+
+  /// Does this use ASCII digits
+  bool get usesAsciiDigits => !usesNativeDigits;
+
+  /// Given a numeric string in ASCII digits, return a copy updated for our
+  /// locale digits.
+  String _localizeDigits(String numberString) {
+    if (usesAsciiDigits) return numberString;
+    var newDigits = new List<int>(numberString.length);
+    var oldDigits = numberString.codeUnits;
+    for (var i = 0; i < numberString.length; i++) {
+      newDigits[i] = oldDigits[i] + localeZeroCodeUnit - _asciiZeroCodeUnit;
+    }
+    return new String.fromCharCodes(newDigits);
+  }
+
+  /// A regular expression that matches for digits in a particular
+  /// locale, defined by the digit for zero in that locale.
+  RegExp _initDigitMatcher() {
+    if (usesAsciiDigits) return _asciiDigitMatcher;
+    List<int> localeDigits = new Iterable.generate(10, (i) => i)
+        .map((i) => localeZeroCodeUnit + i)
+        .toList();
+    var localeDigitsString = new String.fromCharCodes(localeDigits);
+    return new RegExp(r'^[' + localeDigitsString + ']+');
+  }
+
   /// Return true if the locale exists, or if it is null. The null case
   /// is interpreted to mean that we use the default locale.
   static bool localeExists(localeName) {
diff --git a/lib/src/intl/date_format_field.dart b/lib/src/intl/date_format_field.dart
index 3c70d99..495f8f9 100644
--- a/lib/src/intl/date_format_field.dart
+++ b/lib/src/intl/date_format_field.dart
@@ -396,7 +396,9 @@
   /// This method handles reading any of the numeric fields. The [offset]
   /// argument allows us to compensate for zero-based versus one-based values.
   void handleNumericField(_Stream input, Function setter, [int offset = 0]) {
-    var result = input.nextInteger();
+    var result = input.nextInteger(
+        digitMatcher: parent.digitMatcher,
+        zeroDigit: parent.localeZeroCodeUnit);
     if (result == null) throwFormatException(input);
     setter(result + offset);
   }
@@ -600,8 +602,9 @@
 
   String formatDayOfWeek(DateTime date) {
     // Note that Dart's weekday returns 1 for Monday and 7 for Sunday.
-    return (width >= 4 ? symbols.WEEKDAYS : symbols.SHORTWEEKDAYS)[
-        (date.weekday) % 7];
+    return (width >= 4
+        ? symbols.WEEKDAYS
+        : symbols.SHORTWEEKDAYS)[(date.weekday) % 7];
   }
 
   void parseDayOfWeek(_Stream input) {
@@ -638,6 +641,6 @@
 
   /// Return a string representation of the object padded to the left with
   /// zeros. Primarily useful for numbers.
-  static String padTo(int width, Object toBePrinted) =>
-      '$toBePrinted'.padLeft(width, '0');
+  String padTo(int width, Object toBePrinted) =>
+      parent._localizeDigits('$toBePrinted'.padLeft(width, '0'));
 }
diff --git a/lib/src/intl/date_format_helpers.dart b/lib/src/intl/date_format_helpers.dart
index 05a6a49..3ad651d 100644
--- a/lib/src/intl/date_format_helpers.dart
+++ b/lib/src/intl/date_format_helpers.dart
@@ -176,12 +176,25 @@
   }
 
   /// Assuming that the contents are characters, read as many digits as we
-  /// can see and then return the corresponding integer. Advance the stream.
-  var digitMatcher = new RegExp(r'^\d+');
-  int nextInteger() {
-    var string = digitMatcher.stringMatch(rest());
+  /// can see and then return the corresponding integer, advancing the receiver.
+  ///
+  /// For non-ascii digits, the optional arguments are a regular expression
+  /// [digitMatcher] to find the next integer, and the codeUnit of the local
+  /// zero [zeroDigit].
+  int nextInteger({RegExp digitMatcher, int zeroDigit}) {
+    var string =
+        (digitMatcher ?? DateFormat._asciiDigitMatcher).stringMatch(rest());
     if (string == null || string.isEmpty) return null;
     read(string.length);
+    if (zeroDigit != null && zeroDigit != DateFormat._asciiZeroCodeUnit) {
+      // Trying to optimize this, as it might get called a lot.
+      var oldDigits = string.codeUnits;
+      var newDigits = new List<int>(string.length);
+      for (var i = 0; i < string.length; i++) {
+        newDigits[i] = oldDigits[i] - zeroDigit + DateFormat._asciiZeroCodeUnit;
+      }
+      string = new String.fromCharCodes(newDigits);
+    }
     return int.parse(string);
   }
 }
diff --git a/test/date_time_format_test_core.dart b/test/date_time_format_test_core.dart
index 8e347d3..c1a4dc0 100644
--- a/test/date_time_format_test_core.dart
+++ b/test/date_time_format_test_core.dart
@@ -133,7 +133,8 @@
   }
 }
 
-testRoundTripParsing(String localeName, DateTime date) {
+testRoundTripParsing(String localeName, DateTime date,
+    [bool forceAscii = false]) {
   // In order to test parsing, we can't just read back the date, because
   // printing in most formats loses information. But we can test that
   // what we parsed back prints the same as what we originally printed.
@@ -157,6 +158,7 @@
     var skeleton = formatsToTest[i];
     if (!badSkeletons.any((x) => x == skeleton)) {
       var format = new DateFormat(skeleton, localeName);
+      if (forceAscii) format.useNativeDigits = false;
       var actualResult = format.format(date);
       var parsed = format.parse(actualResult);
       var thenPrintAgain = format.format(parsed);
@@ -225,14 +227,23 @@
   test('Test round-trip parsing of dates', () {
     var hours = [0, 1, 11, 12, 13, 23];
     var months = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12];
+    // For locales that use non-ascii digits, e.g. "ar", also test
+    // forcing ascii digits.
     for (var locale in subset) {
+      var alsoForceAscii = new DateFormat.d(locale).usesNativeDigits;
       for (var month in months) {
         var aDate = new DateTime(2012, month, 27, 13, 58, 59, 012);
         testRoundTripParsing(locale, aDate);
+        if (alsoForceAscii) {
+          testRoundTripParsing(locale, aDate, true);
+        }
       }
       for (var hour in hours) {
         var aDate = new DateTime(2012, 1, 27, hour, 58, 59, 123);
         testRoundTripParsing(locale, aDate);
+        if (alsoForceAscii) {
+          testRoundTripParsing(locale, aDate, true);
+        }
       }
     }
   });
@@ -432,4 +443,22 @@
     expect(basic, basicAgain);
     expect(first.month, 7);
   });
+
+  test('Native digit default', () {
+    if (!subset.contains('ar')) return;
+    var nativeFormat = new DateFormat.yMd('ar');
+    var date = new DateTime(1974, 12, 30);
+    var native = nativeFormat.format(date);
+    expect(DateFormat.shouldUseNativeDigitsByDefaultFor('ar'), true);
+    DateFormat.useNativeDigitsByDefaultFor('ar', false);
+    expect(DateFormat.shouldUseNativeDigitsByDefaultFor('ar'), false);
+    var asciiFormat = new DateFormat.yMd('ar');
+    var ascii = asciiFormat.format(date);
+    // This prints with RTL markers before the slashes. That doesn't seem good,
+    // but it's what the data says.
+    expect(ascii, '30\u200f/12\u200f/1974');
+    expect(native, '٣٠\u200f/١٢\u200f/١٩٧٤');
+    // Reset the value.
+    DateFormat.useNativeDigitsByDefaultFor('ar', true);
+  });
 }